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ICE EFFECTS ON STREAMFLOW During winter, ice formation may cause stage and discharge values to appear higher than expected. Ice effects may be minor (occurring only at night and early morning) with baseline flows obvious, or the effects may be major (stage constantly increases over several days or weeks) resulting in greatly erroneous discharge. Streamgages experiencing minor ice conditions will continue to display stage and discharge values to enable users to estimate the approximate base-line stage and discharge. Streamgages experiencing major ice conditions will have the discharge record temporarily disabled to prevent use of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Daily mean discharges during periods of ice effect will be estimated after detailed data analysis.



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LOCATION--Lat 42o11'20", long 71o45'56", Worcester County, Hydrologic Unit 01090003, on right bank, instrument shelter on Elm Court, approximately 20 ft downstream from W. Main Street bridge, stage sensor approximately 50 ft upstream from W. Main Street bridge, at Millbury, MA.
DRAINAGE AREA--71.4 mi2.
PERIOD OF RECORD--July 2002 to current year.
GAGE--Data Collection Platform with satellite telemeter.
REMARKS--Flows affected by effluent releases from Upper Blackstone Waste-Water Treatment Plant located approximately 2.5 mi upstream from gage. High flows may include diversion flood flows through Kettle Brook diversion system with mouth located approximately 2.0 mi upstream from gage.
COOPERATION--Upper Blackstone Water Pollution Abatement District

Photo of Blackstone River gage shelter at Millbury
Photo of Blackstone River control section under W. Main Street bridge
Photo of stage sensor and mounting block

Boating safety tips
This station managed by the Northborough, MA Field Office.

Available Parameters Available Period
All 2 Available Parameters for this site
00060 Discharge 2007-10-01  2016-10-25
00065 Gage height 2007-10-01  2016-10-25

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Instantaneous-data availability statement

Discharge, cubic feet per second

Most recent instantaneous value: 101   10-25-2016   18:00 EDT
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Daily discharge, cubic feet per second -- statistics for Oct 25 based on 13 years of record more
Most Recent
Value Oct 25
Median 75th
Mean Max
62 91 101 103 217 231 1410

Gage height, feet

Most recent instantaneous value: 2.03   10-25-2016   18:00 EDT
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